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November 01, 2025, 10:19:33 am
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Author Topic: Complications  (Read 1085 times)  Share 

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khalil

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Complications
« on: September 27, 2009, 10:44:18 am »
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If a question asks us to calculate the residual value and in the previous question we calculates the least squares regression line, do we use that line or the one in our calculator to give us the predicted value.
Both give very different results
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Craxe

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Re: Complications
« Reply #1 on: September 27, 2009, 01:30:15 pm »
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Either or. The answer shouldn't be very different - only .01ish off

What was the difference?
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khalil

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Re: Complications
« Reply #2 on: September 27, 2009, 01:46:56 pm »
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The difference was 0.18, I had to round of the LSR line to 2 d.p
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doboman

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Re: Complications
« Reply #3 on: September 27, 2009, 10:18:03 pm »
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Quote from: khalil on September 27, 2009, 10:44:18 am

If a question asks us to calculate the residual value and in the previous question we calculates the least squares regression line, do we use that line or the one in our calculator to give us the predicted value.
Both give very different results

As was pointed out, it shouldn't really give you much of a difference. However, there is not concrete rule on which you should take. Given in this situation they told you to calculate the LSRN in the previous question, use that line to give you the predicted value.
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